Frequently Asked Questions

Power Vision

General

What is the Power Vision?
The Power Vision is a new flash tuning solution that can meet the needs of any Delphi ECM equipped Fuel Injected Harley-Davidson. Whether you are just looking to improve the performance and fuel economy of your completely stock motorcycle, or you are running an all out drag bike the Power Vision is the most flexible and powerful flash tuner in the world. The Power Vision uses reflash technology to change the parameters inside the stock ECM (Engine Control Module) that affects the way the engine will run. It can be as simple as using one of Dynojet’s pre-configured calibrations, or you can create a custom tune using the WinPV software.
Which motorycles can I use with the Dynojet Power Vision
The Power Vision is intended for Harley-Davidson Fuel Injected Motorcycles with a Delphi ECM. This includes the 2001-Present Softails, 2002-Present Touring, 2002-Present V-Rod, 2004-Present Dyna and 2007-Present Sportsters. The Power Vision offers the latest flash tuning technology, data logging, and other industry exclusive features for today’s high performance EFI tuning market.
What do I gain?
The Power Vision will deliver a calibration (tune) to your Harley’s ECM that contains the proper data for optimized performance and peak efficiency throughout the operation range. You can mount the Power Vision on your bike and display the J1850 data (stuff like knock, engine temp, spark advance, inlet air temp, etc) on one of many gauge screens, and each gauge has a user configurable alarm to warm you in the event that a parameter is nearing a potentially unsafe value. If you have a Dynojet Wide Band 2 or Auto Tune system, you can simply plug it in and add insightful wide band data to the channel list. Power Vision also allows you to log the data in the event you’d like to analyze this vital information after your ride is complete. You also have the ability to check and clear ECM DTC’s (diagnostic trouble codes), and reset adaptive learning.
Do I need a computer?
No, a computer will not be needed to load one of the pre-configured calibrations, or a copy of the original calibration into your motorcycle. You can even edit the tune directly on the device without touching a computer. The list of available parameters to edit directly on the Power Vision is limited, but it’s extremely handy for in-field calibration changes. If you want to make adjustments to the calibration beyond what can be done directly on the Power Vision, or if you are an experienced tuner looking to maximize the effectiveness of your tunes, then you will need a computer with Microsoft Windows operating system (XP, Vista, or 7) in order to use the WinPV tuning application (which is included free).
How does the Power Vision connect to my computer?
The Power Vision connects to your computer using the included, standard USB to Mini USB cable.
How many motorcycles can I use the Power Vision on?
The Power Vision will only be able to tune one motorcycle (flash it as many times as you like). It can be connected to other motorcycles to monitor / log data, check and clear DTC’s (diagnostic trouble codes), and reset adaptive learning.
Does it come with a mount?
No, as everyones’ mounting needs will be different. The Power Vision uses the AMPS four bolt pattern, so it can be mounted using many of the mounting solutions readily available. We have partnered with Techmount to ensure that you can buy the mount that fits your needs.
Does the Power Vision display need to stay on the bike?
No. You can remove the display and your bike will run with the last tune that was sent to the ECM.
Is it weatherproof?
The Power Vision is weather resistant. We recommend removing the Power Vision before washing the motorcycle.
I have a PV-1, can I connect it to a bike with a 6 pin diagnostics port?
No, but you can purchase a 6 pin Power Vision cable to make it work, part number 76950346. If you need to connect your PV-2 to a bike with a 4 pin, you would need cable 76950241.
I just bought a newly released model bike; will a Power Vision work on this bike?
When new model bikes are released, Dynojet has to see the bike to know whether the existing Power Vision will work on that bike or not. Most likely the Power Vision will work, but there may need to be new firmware and tunes created to support this new bike. Older Power Vision units will need to be updated before they will support this new bike.
Will the Power Vision overwrite a non factory tune?
In most cases yes; the Power Vision doesn’t care what tune is in the ECM. When the Power Vision is married to a bike, it saves a copy of whatever tune is in the ECM at that time. This tune will be saved in a hidden slot and called Original tune. If you restore Original tune with the Power Vision, it will write this tune back to the ECM.

Accessories

How many times should I run AutoTune?

This will vary depending on how close the base tune is to your bike setup, and whether you are using AutoTune Pro or Basic. A tune created with exactly the same components, should only need 2-3 AutoTune sessions with Pro or Basic. A tune that was created with only similar components would need more AutoTune sessions. AutoTune Basic will need more sessions than Pro because the stock narrowband o2 sensors used in Basic will only “read” a fairly small range, about 14.2 – 15.2. AFR values outside of this range will only show as rich or lean. AutoTune Pro, using wideband o2 sensors, will see AFR values between about 10.0 – 18.0. Therefore it takes less sessions to make the needed adjustments.

If I want to use the Auto Tune Pro method, what do I need to buy besides the Power Vision?

The kits you need are technically the same as the AT-100 that's used with our popular Power Commander, but these new Power Vision specific kits include a longer CAN cable to connect the Auto Tune to the Power Vision, and also a Y-splitter to make power / communication a plug-n-play affair.

You’ll need one of these kits:

  • AT-110 AUTOTUNE,HD-J1850,PWRVSN
  • AT-110B AUTOTUNE,HD-J1850,PWRVSN,BUNGS
  • AT-120 AUTOTUNE,HD-CAN,PWRVSN
  • AT-120B AUTOTUNE,HD-CAN,PWRVSN,BUNGS

What is the difference between AutoTune Basic and Pro?

AutoTune Basic: (Only works on bikes with factory O2 sensors) Uses the bike’s stock narrowband o2 sensors Works well as long as the base tune is fairly close to the bike setup Works well for completely stock or lightly modified bikes No need to drill holes and weld o2 bungs in head pipes AutoTune Pro: Uses Dynojet’s AT module and two wideband o2 sensors Works well with any base tune Works well for highly modified bikes Need to have two 18mm Dynojet o2 sensors in the exhaust

Why can’t I get 12mm wideband o2 sensors for my AutoTune kit?

Dynojet supplies industry standard Bosch 18mm wideband o2 sensors in our AutoTune kits. 12mm wideband o2 sensors are not readily available. To use the AutoTune module, 18mm bungs need to be welded into the headpipes and the 18mm sensors need to be inserted into these bungs. The stock 12mm o2 sensors can be left in the exhaust pipe for use after the Autotuning is complete. Dynojet has tested a few of the 12mm to 18mm adapters and found them to not work correctly.

Do I pay for additional software updates?

No, the WinPV software will be updated automatically at no charge when you run the update client on your computer.

AutoTune does not seem to be working, why?

When running the AutoTune process, the hits screen will show the number of times that the engine had been at a given rpm/throttle position, and the Power Vision has recorded data. If you have any errors on the screen, you will not get any hits. The reason behind the errors will need to be resolved, before you will get any hits.

Can I use AutoTune Basic to adjust ignition timing?

No, AutoTune Basic will not work correctly to adjust ignition timing. During the AutoTune Basic process, the tune is temporarily changed to run at fairly lean air fuel ratios (AFR). This is because you are using stock narrowband o2 sensors, which will only read fairly lean AFR ratios. Running this lean may cause engine knock, something that would not occur under normal AFR settings. AutoTune Pro uses our wideband o2 sensors, and will work correctly to adjust ignition timing.

What does the AutoTune hits screen cell colours mean?

The cell will change color as the hit count increases. The number of hits is the number of samples taken at that spot. This count is for the front cylinder. The default colours are 1 - 2 = Yellow, 3 - 6 = Orange, 7+ = Red.

I have an AutoTune module from a Power Commander; can I use it with my Power Vision?

Yes, the AutoTune modules are basically the same between the Power Commander and Power Vision. You would need different cables than what came with the AutoTune module for the Power Commander; you will need the ones that come with the AutoTune module for the Power Vision. These cables are available separately.

After an AutoTune session, I am prompted to Cap or Scale. What does that mean?

If you are prompted to Cap or Scale after an AutoTune session, this means that AutoTune wants to increase one cell or more, in the VE tables, beyond the maximum value of 127.5. If this happens, AutoTune will prompt you to make a choice. Cap will raise that cell or cells to 127.5 and stop there. Scale will increase the engine displacement by a percentage, and then decrease all of the VE cells by that same percentage; effectively giving you the exact same amount of fuel. Then AutoTune will apply the changes it learned during the session. It is usually safe to choose Scale once or twice, and then choose Cap thereafter.

Power Vision Tune (Map)

Where do I get tunes?

There are three types of tunes that you can deliver to your bike: pre-configured tunes (loaded on the device from Dynojet), custom tunes (loaded or emailed to you by a custom tuner), or you can use a copy of your original (The tune file that is saved to the Power Vision when married to the ECM) tune to tweak. The Power Vision will be pre-loaded with a large selection of pre-configured calibrations for bikes with basic upgrades (intake and exhaust), as well as tunes for bikes with modified engines (increased displacement, cams, head work, etc). As new calibrations are developed, they will be automatically uploaded to the Power Vision through the update client feature of the WinPV software……Just plug in the USB cable and select “Update Client”, choose the update, and we do the rest. The Power Vision holds up to 6 tunes (any combination of the 3 types) for you to choose from at your convenience, and these can be replaced as many times as you like with updated tunes.

How do I find a tune for my bike?

Dynojet has created a number of pre-configured tunes for various bikes; but there no way to have a perfect tune for every possible combination of aftermarket parts, or rare bikes like CVO’s. What you want to look for when selecting a tune is similar components. If the aftermarket components have similar airflow, a tune created for each would be very similar. All of the tunes we have built are located on our website, and will be on your Power Vision if the tune database is up to date. If we do not have a tune listed that is a close match for your bike because you have aftermarket cams, etc, then you can request a tune to be built for your setup. Just send an email to pvtech@dynojet.com and list the bike and all of the modifications. We will build you a tune for the components listed and email it to you.

What if there isn’t a tune for my bike?

Dynojet works around the clock building calibrations (tunes) for different combinations. If we don’t have a tune that a good fit for your bike; you still have options.

  1. Find an Authorized Power Vision Tuning Center. Power Vision Tuning Centers have been trained by Dynojet and use the latest in dynamometer technology, Air-Fuel systems, and tuning techniques to build safe, powerful tunes.
  2. Tune the bike yourself using the Auto Tune module.
  3. Obtain a Power Commander Map that most closely matches your combination, and import that map into your stock, or original calibration (only available for non-electronic throttle bikes).

How do I import a Power Commander map?

You can import a Power Commander map to most 2007 and older bikes, and some newer than 2007 bikes. To import a map, first you need to download a Power Commander map and save it someplace you can find it. Next, you want to retrieve the original tune from the bike, and save that tune to a slot in the Power Vision. Next, connect the Power Vision to your computer, open WinPV, and then select Get Tune. Select the slot you saved the original tune. Now the tune is open in the WinPV software. Next, select File, Import Power Commander Map. Find the map you saved earlier, and Open it. The software will import the Power Commander map, and modify the Original tune with those values. Now, just Send Tune to put that modified tune on a slot of the Power Vision. Lastly, connect the Power Vision to the bike, and flash the ECM with that tune.

How do I adjust my tune?

The best way to self modify a tune for a bike is to run AutoTune. Running AutoTune on the Power Vision will make adjustments to the tune for your bike, in your environment. Once the AutoTune has been run, if you are still having problem areas, you may want to use QuickTune to make adjustments to the tune to address the problem areas. Both AutoTune and QuickTune can be found under Program Vehicle on the Power Vision main menu.

How do I retrieve the Original tune from my bike?

When a Power Vision is married to a bike, a copy of the tune in the ECM is saved in a hidden slot on the Power Vision called Original Tune. To retrieve this tune, with the Power Vision plugged into the bike, go to Program Vehicle/Load Tune/Load Copy/Load Copy of Original. Click Ok. Select one of the six custom slots, and save the Original tune there. When this step completes, exit out of the menu. With the Original tune in a custom slot, you can connect the Power Vision to your personal computer and use WinPV to Get Tune. The tune should be named “copy of Original tune”. Once the tune is open in WinPV, you can go to File, Save As. Give the tune a name and click Save. The default directory is My Documents/Power Vision. The Original Tune from the bike is now saved on your computer.

Can the Power Vision be tuned on a dynamometer?

Yes, the Power Vision can be tuned by a professional using a dynamometer. The bike is strapped down on a dyno, and air fuel ratio is measured in the exhaust pipes at various rpm/loads. Fuel and ignition timing are adjusted to achieve the best running motor. This information is saved in the ECM of the motorcycle. For a list of Certified Power Vision Tuning Centers, click here.

I got a tune emailed to me, how do I load it?

First you need to move the attached tune from the email, to a place on your computer where you can find it. The desktop would be a good place. Once you have the tune on the computer desktop, just open WinPV, and then select Open tune. Navigate to where you saved it, and select the tune that was sent. Click Open. Now the tune should be open in WinPV. With the Power Vision connected to the computer, click Send Tune. At the Custom Tune Slot, select a slot to accept the tune. Click Ok. That tune is now in the selected slot. Disconnect the Power Vision from the computer, and connect it to the bike. Key on, run switch on, on the Power Vision menu select Program Vehicle/ Load Tune/Custom Tunes. Highlight the custom slot the tune was previously saved, and press Select. Continue through the remaining steps to send the emailed tune to the ECM of the bike.

Deceleration or shift popping

To address decel or shift popping, use the built in Power Vision feature Quick Tune. Start by adding fuel (+5), and spark (+3) in the decel columns, and then test. Adjust further if needed.

Why are there two types of tunes listed for my bike, one with the letter “a”, and one without?

In some years there were two different, incompatible ECM’s on the same model bike. The bike could have either style ECM. The software levels between the two are NOT compatible, and thus a tune created for one is not going to work on the other. Once the Power Vision is married to the bike, it will look at the ECM, and offer the correct type of tune in the pre-configured tune database.

How do I create digital gauge warnings?

You can setup a low and high warning for a digital gauge, the color of that gauge can change if the value drops below the low, or goes above the high. To setup a warning in the digital gauge display, go to the gauge you want to setup. Select the warning field you want to change, type in the value you want to be the warning, and hit save. Next press the palette icon on the right. Next select a different color to use, and press save. Now, once that value is reached on that gauge, the color will change to the one selected.

My fuel economy readings are wrong, how do I fix them?

The PV trip center uses correction fields that default to 1.000. You can type in the correct value in one of the trip fields, and let the unit calculate the right correction for your bike. For example, if you reset trip A or B, filled up with fuel, and drove a number of miles and stopped to refill. You can then enter the actual Fuel Used, save it, and the correction number will be adjusted. You can also calculate the actual fuel economy with a calculator, and type this into the Economy (mpg). The correction number will be adjusted. Once these fields are adjusted in this manner, your fuel economy readings should be correct.

Software Related

How do I make sure my Power Vision is Up-to-date?

The Power Vision hardware has never changed; all new features and tunes are available to every Power Vision made by running the PV Update Client. To run PV Update Client, on your computer go to Programs/Power Vision/PV Update Client. Once you open the PV Update Client, your computer and Power Vision items are compared to the latest versions on our website. If the Installed version is different than the Latest version, just select the outdated item, and click Download & Install Selected Updates. Once all of the items are updated, your Power Vision is the same as one made today!

Does it come with the software?

The Power-Vision does come the WinPV tuning software.

Do I pay for additional software updates?

No, the WinPV software will be updated automatically at no charge when you run the update client on your computer.

How can I compare two different tunes?

There is a feature in the WinPV software to compare two different tunes. Once you have a tune open in WinPV, you can select the icon to Load Compare. This will prompt you to select a tune that is already saved on the computer; you cannot select a tune from a Power Vision. Once the compare tune is opened, the software will highlight the fields that are different between the two tunes. You can switch back and forth and see both tunes, or you can see the Delta, which is the difference between the two.

How do I update a tune to see additional fields?

If the tune was created with an older version of firmware, updating it could expose more fields. With the Power Vision plugged into the computer, open WinPV, and open a tune. Once the tune is open, select PowerVision > Update tune using PV. The tune will be updated using the firmware version on the Power Vision.

I want to modify my current tune with WinPV software, how do I find it?

With the Power Vision connected to your bike, go to Program Vehicle > Load Tune > Load Copy > Load Copy of Current. Select Ok. The Power Vision will retrieve the Current Tune. Next highlight a slot to save the tune. Press Select, press Ok. A copy of the Current tune from the ECM is now saved in that slot. Next, disconnect the Power Vision from the bike, and connect it to your computer, open the WinPV software. Click Get Tune, select the same slot you saved the tune earlier. Press Ok. The Current tune from your ECM in now open in WinPV and ready to be modified. Once you are done, you can Send Tune, and select a slot on the Power Vision. Lastly, connect the Power Vision back to the bike, and flash the ECM from that slot.

How can I see the menus on the Power Vision, without the bike?

The Power Vision has an option to see the menu items without using the bike. With the Power Vision connected to your computer, open WinPV. On the menu go to PowerVision > Diagnostic/Test Functions > Exit PC link mode. Click Yes. The Power Vision screen now looks like it would when connected to a bike.

How can I change the speedometer calibration?

If your stock speedometer is driven from the ECM, you can adjust the speedometer calibration number in the ECM. This field is found under Gear in WinPV, or VSS in Quick Tune on the Power Vision. Changing this number up or down will affect the speedometer readings.

How can I change a table in one tune, to match a table in another tune?

The WinPV software has a utility to compare two tunes. If you open the tune you want to change, and then load compare the tune you want to copy from, WinPV will compare all of the tables in the tune for you. The Active File button will show you the table from the first tune. The Compare File button will show you the table in the second tune. The Delta button will show you the difference between the two tables. You can change the values in the Delta field to zero; this will change the values in the Active file to match the Compare file.

WinPV

What is Lambda?

Lambda in reference to the Power Vision is a measurement of oxygen in the exhaust. Lambda is similar to Air Fuel Ratio, but is independent of fuel type. An AFR for pump gasoline of 14.64:1 (stoichiometric) is equivalent to lambda of 1. This is where an engine will generally produce the best fuel economy, and produce the least amount of harmful emissions. An AFR of 13:1 or lambda of .89 will generally produce the most power and torque.

What are VE tables?

VE or Volumetric Efficiency is a measurement in percentage of efficiency that an engine can move the air/fuel into and out of the cylinder at various rpm and throttle positions (or manifold absolute pressure, MAP). This table is influenced by the engine displacement, camshaft, head design, exhaust, and air filter. In theory a value of 100 would equal the volume of the cylinder, but efficient design allows values greater than this. The maximum allowed value in any cell is 127.5. To increase fuel make the values larger, to decrease fuel make the values smaller.

How do I setup logging?

On the Power Vision go to Datalog/Datalog Settings/Signals. On this screen highlight Manual, and then press Select. On the next screen you will see the field selected to log currently. To add more fields, press Add. On the next screen highlight the field next to Signal. Next, select Vehicle to choose any channel from the bike ECM; select Dynojet if you want to log data coming from an AutoTune module. On the next screen select the field you want to log, and then press Ok, Ok. Once you have all the fields you want to log, press Exit. When you start logging on the Gauges screen, the channels selected will be logged.

How do I setup gauges?

To setup live gauges to view, on the Power Vision go to Datalog/Gauges. From this screen you can scroll thru the available gauge setups by pressing the Left or Right arrows. Once you have a Gauge screen you like, you have to select the fields you want to see. Just press None, on the next screen select None. On the following screen select Vehicle to choose from ECM channels, or choose Dynojet to choose from channels from the AutoTune module. On the next screen select the channel you want to display on that gauge field, and then press Ok, Ok When you have selected all of the channels you want to see, just press Exit.

What is the difference between a PV-1 and a PV-1B?

The only difference is the colour; they are functionally the same.

What’s the difference between a PV-1 and a PV-2?

The truth is there is really only one Power Vision, but there are two different cables for different year/model bikes. The PV-1 comes with a 4 pin cable for the J1850 bikes. The PV-2 comes with a 6 pin cable for the CAN bikes.

I’m looking at buying a Power Vision from a private party, what do I look for?

Be careful, the unit may have been married to a bike already. Unless you can get your hands on the unit, and verify the unit has not been married, consider the seller’s reputation carefully. If the unit has been married, you would need to purchase an unlock license (£159) to be able to use the Power Vision on your bike.

I have had my bike tuned at a shop using their Power Vision; can anyone else modify this tune?

The bike can always be reflashed by any HD dealer. As far as another Power Vision, it depends. When a shop purchases a tune license to allow them to tune a bike, the license belongs to the shop. If the shop decides to give you the tune license, this license can be used on any other Power Vision.

Performance

Why does my Power Vision lock up while riding?  

Most of the time we have seen this type of problem, it has been the cable running to the Power Vision picking up interference from a coil or spark plug wire. Rerouting the cable away from these items usually fixes this problem.

What is the best Air Fuel Ratio for performance? Economy?

A naturally aspirated engine, running on pump gasoline will normally make the most horsepower at an AFR of about 12.8 – 13.0. An AFR of about 14.6 will produce the best fuel economy. Dynojet normally creates tunes with AFR’s of 12.8 at high load/rpm areas; AFR’s around 14.6 at low load areas; and AFR’s between those numbers at other areas.

How do I make the throttle go to “1 to 1” on my fly-by-wire bike?

On the fly-by-wire bikes, the ECM controls the action of the throttle butterfly, based on the twist grip position. There are two tables in the tune that control this butterfly vs. the twist grip; Throttle Blade Control, and Throttle Blade Control Alternate. There is a third field that controls what gear these two tables are used, Throttle Table Transition Gear. The factory setting for TTTG is 3. This means the Throttle Blade Control table is used for gears 1-3, and the Alternate table is used for gears 4-6. If you change the TTTG value to 6, the bike will use the more aggressive Alternate table for every gear. If you want to make the throttle even more aggressive, change the values in Alternate table to higher values, up to the value at the top of each column.

Target Tune

What is Target Tune?

Target Tune is a product that uses a control module and 2 Bosch wideband AFR / Lambda sensors. It uses the existing closed loop, adaptive fuel control strategy in your Delphi ECM, but with changes made to the calibration to allow your ECM to use the wideband sensors. In order for the system to work, you must have a calibration flashed to your bike with the various edits required to make it work. At this time only a Certified Power Vision Tuning Center, or a Dynojet technical representative can make those edits.

So my ECM is now able to use wideband o2 sensors and fix-up my tune on the fly?

Yes, your ECM has now been transformed and is allowed to read and manage wideband O2 sensors, and more importantly, use them for closed loop control on your fuel table.

What should I expect?

Your bike will immediately run better once the various thresholds to allow closed loop fuel control are met, things like engine temp, etc etc. It will immediately run at the target AFR or Lambda defined in your calibration’s fuel table even if your VE tables are not perfect.

Once Target Tune is installed and I have the correct version of my calibration flashed, what do I do?

Enjoy the ride with newfound power and torque, and the satisfaction knowing you have the most sophisticated tuning solution available for Harley-Davidson motorcycles.

Can I make changes to my tune?

Yes, all the regular tuning parameters that are exposed to you in WinPV are still available.

So if I change the values in my fuel table, my bike will actually run at those AFR or Lambda values?

Yes. Your tuner, or Dynojet would have set up your fuel table for best results, but you can edit these values to suit your needs.

Why does Target Tune not seem to be working? Why I am getting errors on the bike after installing Target tune?

You have to be using the newest desktop software, firmware, and tune database for Target Tune to function. Using old versions of any of these will keep Target Tune from functioning.

Can I use the Target Tune module for the AutoTune process?

Yes, the Target Tune module will work for the AutoTune function. Be sure to select the correct mode, “Dynojet Target Tuner Wideband Kit” when starting an Autotune session.

Will Target Tune make adjustments in the tune that I can see?

No. At this point only those users with special credentials, like Certified Power Vision Tuners, can make the necessary calibration changes to make Target Tune function. That being said, unless you have these special credentials you will not be able to “see” the calibration changes in WinPV. Once the necessary edits are made to your calibration, and the Target Tune is fitted to the bike, you are ready to go. The ECM will use the information provided by the Target Tune system to make adjustments to the short and long term trim fields in the ECM of the bike, while you ride. These fields are not found when you look at the tune in WinPV.

How can I turn off Target Tune?

You can load a tune that doesn’t have Target Tune enabled, or you can use Quick Tune to turn off closed loop.

What is the adjustment range for Target Tune?

Target Tune can subtract 30%, and add 40% fuel to a tune. Your tuner can adjust these values if need be.

How can I tell if Target Tune is working?

At any given operating condition there is an AFR, or Lambda value the ECM is trying to achieve. Using the fuel table as a reference, you can simply monitor the real time AFR or Lambda on your Power Vision while riding, or create a datalog to verify. There are also other channels that can be monitored, or logged that would give you an indication that Target Tune is online and the ECM is using it accordingly.

Do the Adaptive Fuel Factors get committed to my calibration?

No, however they are used by the ECM to calculate the final amount of fuel to be delivered at a certain operating condition. The AFF values are used by the ECM until you clear them via the Power Vision function “Reset Fuel Trim”. These values are effectively applied to the base VE tables in your calibration by the ECM, however they are NOT committed to the calibration itself. To properly “fix” your calibration, you would need to use the Autotune process and select the proper mode (“Dynojet Target Tuner Wideband Kit”).

What happens if there is a problem with Target Tune?

The OEM diagnostic system is still fully functional, and in the event there was an issue a DTC would be set. You can use the Power Vision to read the DTC like normal. If the module, sensor, or harness were to fail the ECM would transition into open loop, just like if your OEM narrowband sensor were to fail.

1 Not available for Electronic Throttle Controlled (ETC) based bikes

"

Power Commander

Installation Issues

Powering up the PCIIIUSB

The Power Commander needs to be constantly powered in order to communicate fully with the computer. It should have a constant green light on. Make sure you have a fresh (above 8.5 volts) 9 volt battery if using the battery adapter; or if using the bikes power, most bikes need to be running to provide the constant power needed rather than just turning on the key. Make sure the USB connector is fully seated into the Power Commander. If there is any silver showing on the connector, it is not completely plugged in. It is a tight snap-in fit connection.

Power Commander V on older bikes

The PC V was initially released for 09 models forward only. We have started offering the PCV for some models older than 09. We have not tested and verified operation of the unit on some of the older models at this point, so we cannot officially support it for use on anything other than what we have tested. Some of our dealers and individuals as well have successfully retro fitted the PC V to older model bikes that have not changed from previous model years to 09. Since we have not done any testing on the older models we do not have any pre developed maps for many model years prior to 09 either. A map for a Power Commander IIIUSB can be imported to the PCV. Any installation and utilization other than those applications specifically recommended by Dynojet would be at your own risk.

Does a Power Commander make my vehicle faster?

The Power Commander is a tuning tool to adjust fuel, and on some models ignition timing. Just adding a Power Commander to a completely stock vehicle usually does not increase peak horsepower. It usually will improve drivability, throttle response, and mid-range horsepower and torque. If the vehicle has been modified in some way to increase airflow through the motor, the Power Commander can provide the correct amount of fuel for those modifications. This will often give an increase in overall horsepower.

Do I need to disconnect my o2 sensors?

In order for the race ready line of Power Commanders to have complete control over everywhere a vehicle runs, we usually want to disable, or control the stock o2 sensor(s) on a machine. This gives us the ability to tune the vehicle everywhere. If the stock o2 sensors are left connected as from the factory, they would conflict with the fuel changes the Power Commander is making. In effect, nullifying the fuel changes the Power Commander makes.

Will this Power Commander fit my bike?

Dynojet makes about 500 different Power Commanders; they are pretty much unique to a certain year/model vehicle. A Power Commander for one vehicle, most likely will NOT work on a different vehicle. There are exceptions to this rule; a similar model from the same manufacturer might use the same Power Commander. If you have any questions, just give us a call or email for fitment questions

Why doesn’t your AutoTune use 10/12mm o2 sensors?

Dynojet supplies industry standard Bosch 18mm wideband o2 sensors in our AutoTune kits. 10/12mm wideband o2 sensors are not readily available. To use the AutoTune module, 18mm bungs need to be welded into the headpipes and the 18mm sensors need to be inserted into these bungs. Dynojet has tested a few of the 10/12mm to 18mm adapters and found them to not work correctly.

Does the Power Commander V have built in Ignition control?

We do offer “built-in” ignition timing adjustability and ignition controlled features (Rev X-tend, Launch control, Pit-lane Speed Limiter, etc.) on the Power Commander V module for a select few single and twin cylinder models. Three and four cylinder models would require an additional Ignition Module accessory for this capability, if available.

Accessory Issues

PCV Map Switch

The Power Commander V is capable of having two maps loaded, and being able to switch between them on the fly. Once you have made the physical connections of the map switch, you need to enable the option in the software, and then send a second map to the Power Commander. In the desktop software this option is found under Power Commander Tools/Configure/Feature Enables & Input Selections. Check the box next to Map Switch; click Ok, and then Send Map. After enabling this option, the first time you send a map to the Power Commander, you should get prompted on which position to send the map to. Once you have sent two maps to the Power Commander, every time you Send or Get Map, it will perform that function on the map that is selected.

How often to accept AutoTune trims?

The AutoTune module creates the adjustments and stores them in a table called Trim. It is a good practice to accept these trims a few times (2-3), on a new install. When you accept the trims you will be moving the values generated by the AutoTune from the trim table(s), to the fuel table(s). This feature can be found under Map Tools/Auto Tune tables/Accept All Trims. Be sure to Send Map after accepting the trims. After accepting the trims a few times, there is little benefit to continue accepting the trim values further; the AutoTune will always make small day to day adjustments.

How do I add a SFM or Ignition module to my PCV?

The Power Commander controls the secondary units SFM or Ignition modules. In order for the Power Commander to do that, it has to know the other unit has been added. To accomplish this, just plug both the PCV and other unit into the computer using two USB cables. The Power Commander software should detect a second device, and prompt you to add it to the network. Once a second device is added to the network, the Power Commander software will want to see that second device from then on. You will need to use two USB cables, or run the engine to accomplish this.

Should I buy the AT-200 or AT-300 AutoTune?

If you have a 2 cylinder bike with a PCV, you have a choice to use either the dual channel kit (AT-300) or the single channel kit (AT-200). The dual-channel AutoTune kit tunes more accurately (cylinder advanced), but is more expensive. Some people don’t feel the gains outweigh the cost, but others do. The gains to be made with dual channel over single channel are dependent on the bike model. On an air cooled V-twin, the cylinders are going to need different fuel quantities because of the cooling differences. A parallel or boxer twin would have very similar cylinder temps, and have similar fuel requirements. There is also exhaust airflow differences to consider, a V-Twin has very different flow from cylinder to cylinder; other types of twins have nearly identical exhaust flow from cylinder to cylinder. It’s a judgment call which is best for your bike.

How do I tell if my AutoTune is working?

The easiest way to determine if the AutoTune is working is to go for a ride, come back, plug the Power Commander into a computer and look at the trim table(s). If there are values in any cell other than zero, AutoTune is working. If the table is all zeros, AutoTune is NOT working.

What does the start-up fuel option do?

This option gives you the ability to add, or remove fuel for a short period of time during engine cranking and initial start-up. This option is commonly used on with big motor builds, to get the bike to start when cold. It can also be used to remove excess fuel during start-up when larger injectors are installed.

Should I purchase the AutoTune module, or have my vehicle custom tuned on a dyno?

The AutoTune module does give an end user the accessibility and capability to custom tune a Power Commander map file, as accurately as a professional dyno tuner using the Bosch LSU 4.2, 5-wire, wideband O2 sensors for exhaust gas analyzation. Some users may find that having a professional tuner setup everything as needed (including the AutoTune feature) is necessary. As a professional tuner is only as good as the equipment he/she uses, the equipment is only as good as the person using it also.

My Launch Control option is not working, how can I test it?

First, the Power Commander has to be in control of Ignition timing to use this feature. The Power Commander is basically looking for a change of continuity to ground on a wire when the clutch lever is moved. Basically the wire would be grounded, and then not grounded when the clutch lever is pulled, or vice versa. Test this wire with a multi-meter, engine running, side-stand up, and in gear. We have seen various bikes act differently under all of these conditions.

Quick shifter configuration in PCV

When setting up a Quick Shifter with a Power Commander V, there are a few things to keep in mind.

  • If the bike has 8 fuel injectors, just the Power Commander is not enough; you will also need an Ignition module, SFM, or QEM.
  • You can only use gear dependant mode it you have ran a wire from the bikes speed or gear sensor to the Power Commander V, and have configured speed or gear input. In most cases start out with Single Time mode.
  • Make sure the settings for switch style is set to match the sensor you actually have. Dynojet has sold both types, open or closed. The best way to confirm your sensor type is with an Ohmmeter. At rest, the sensor will either have full continuity (closed), or no continuity (open). Set the switch style to match your sensor.

How do I configure AutoTune target AFR?

Dynojet creates target AFR tables for most of our pre-configured maps. The values in our supplied AFR table are what we recommend for most users. You are free to change these values to meet your needs or desires. The AFR values we supply are what we have found to work best on that particular vehicle. There are some older maps that do not have any values in the AFR table; you will have to fill those in yourself. Most naturally aspirated four stroke engines, running pump gasoline, make the best horsepower at an AFR between 12.8 – 13.4; and get the best fuel economy around 14.7 AFR. Boosted engines need significantly different numbers.

How do I configure Quick Shifter settings?

The Quick Shifter has settings that can be adjusted for longer or shorter kill times; and the minimum rpm the Quick Shifter will function. You may find the default settings work for you, or you can make adjustments. You can adjust the kill time longer or shorter; the engine will hesitate for that number of milliseconds. You can set the minimum RPM to whatever you like; the Quick Shifter will only work above that RPM. You can only use gear dependant mode if you run a wire from the bikes speed/gear sensor, and configure speed/gear input.

Can I have AutoTune start working after a certain engine temperature?

The AutoTune process has an option to start working only after a certain engine temp is reached. In order to use this option, the Power Commander V has to be connected to the engine temp sensor, and temp input has to be enabled on the PCV.

Software Issues and Features

Power Commander III Button adjustment

With the ignition off, hold down all three buttons on the Power Commander III unit. While still holding down the buttons, turn on the ignition and start the bike. Release buttons. The light(s) should show up in the last place they were left, by default the center two lights. Select the range you wish to adjust: Low, Med, High by pushing the corresponding button once, (these ranges are determined by taking the bikes RPM limit and then dividing it into thirds). At this point holding that button down will move the lights down (leaning out the mixture). Pushing the button repeatedly will move the light up (richening the mixture). When the two center lights are lit up this is the “0” setting. After making your adjustments wait 20 seconds before turning it off. This allows the settings to be saved to memory.

AutoTune Running Light

The AutoTune running light in the software will only come on if all of the parameters for the AutoTune to work are true.

  • The light on the AutoTune module is steady Red.
  • The Can cable and Terminator plug are installed.
  • The require run time, if enabled, has elapsed.
  • The require engine temp, if enabled, has been exceeded.
  • AutoTune Switch, if turned on, switch is in the correct position.
  • The motor is running at an RPM and Throttle position that has a valid number in the target AFR table.
  • The live AFR reading is between 11.5 and 16.0. If all of these parameters are met, the light for AutoTune Running should be lit.
How do I downgrade my map from advanced to basic?

On the Power Commander IIIUSB, just go to Tools, Demote map to Basic. With the Power Commander V, this setting is found under Map Tools, Advance Demote map, Fuel Tables (TPS). Change to Basic. If Basic is not an option, you will need to Delete AutoTune tables first. To do this go to Map Tools, AutoTune tables, Delete tables. Once this is done, the option to change to Basic fuel tables should be available.

Can I use two maps and AutoTune at the same time?

The Power Commander V does have the capability to store 2 maps in its memory that can be toggled “on the fly” with any simple single pole, single throw switch wired to 1 of the 2 available switch inputs on top of the PCV module. The extra memory capacity for the 2nd map is also what is used to store Auto-tune tables, so the Map Switch feature and Auto-tune feature can NOT be enabled simultaneously. If Auto-tune is enabled, you could instead use the switch to toggle the Auto-tune feature on/off “on the fly.”

PCIII USB firmware update failure

You can import a Power Commander III USB map into a Power Commander V by following the steps below.

  • In the PCV software, click on File, then Import PCIIIUSB map.
  • Click on a PCIIIUSB map, and then click Open.
  • The PCIIIUSB map will be converted to PCV format, and opened in the PCV software.
  • At this point you can either save this map on your computer in PCV format, or send the map to a Power Commander V.
Rev Extend in predeveloped maps

The reference in the map notes about the Rev Extend enabled indicates that that map was developed with the Rev Extend enabled and the fuel was mapped though the higher rpm settings. It does not indicate that the Rev Extend feature is turned on in your Power Commander. You must still manually turn on the feature in your Power Commander in order for it to rev to the higher limits.

Firmware updates

The Power Commander is controlled by firmware in the unit. This firmware can be updated in the field by running a firmware update. The latest firmware is always available on our website. Firmware updates are how Dynojet introduces new features, and fixes known problems. A firmware update is not required unless you are having a problem, or want to take advantage of newer features. You have to be using the latest desktop software to install the latest firmware. Just download and save the latest firmware, and then unzip the file someplace you can find quickly on your computer, like the desktop. Next, run the update firmware from within the Power Commander desktop software. The update will take a few minutes to run; when complete your firmware should be up to date. The Power Commander V firmware update often needs to be run a few times to complete fully. The Power Commander III USB needs the 9 volt adapter to perform a firmware update.

Update firmware

The Power Commander V, SFM, and PCV Ignition module all take the same version of firmware, and all modules on one vehicle need to have the same version. The Power Commander III USB and Ignition module have different versions of firmware available, and they need to have compatible versions. If you update your Ignition module, you may also need to update your Power Commander. Be sure you select the correct firmware for your device. The Power Commander III USB needs the 9 volt adapter to do a firmware update. The Ignition module needs the Programmer module and 9 volt adapter. The latest firmware is freely available on our webpage.

Loading a map

The map in a Power Commander controls how the vehicle runs. The correct map should make the engine run well; the wrong map may cause the engine to run poorly. To load a map in a Power Commander, you need to have installed the correct Power Commander Software and maps. Both of these are freely available on our website. First open the software, and then select Open Map. Select a map you want to use, then Send Map to overwrite the current map with the one you have selected. The Power Commander III USB needs power to complete this; either the 9-volt adapter or by running the engine. The Power Commander V only needs the USB cable to do this.

How do I use the Switch Input under feature selections on the PCV?

You have two options for switch input, 1 or 2. These relate to the holes on the side of the Power Commander. Starting at the outside edge at 1, and counting inward, holes 6 and 7 are switch input 1. Holes 4 and 5, are switch input 2. If the wires from your Map switch or Quick Shifter are connected to the holes 6 and 7, set the option to switch input 1. If they are connected to holes 4 and 5, set the option to switch input 2.

Setting throttle position on fly-by-wire bikes

The normal procedure to set the throttle position will not work correctly on fly-by-wire bikes, because the throttle is controlled by the bike’s ECM. The throttle blades may not go fully open until the engine is actually above a certain RPM, or some other parameter is met. In these cases, you only need to adjust the closed value so TPS reads zero at normal idle. In the throttle calibration screen, there is an arrow button pointing to the left. If you click this button, the numbers in the left box will be changed to match those in the center. Click Ok, you should see the TPS is now reading zero.

Do I need to use Get/Send Map or Table on the PCV?

The Power Commander V software offers the option of getting or sending a table, vs. getting or sending a map. A map for a Power Commander can be made up of multiple tables. If you are looking at one table, and select Get or Send Table, you are only doing that one table. If you select Get or Send Map, you are doing all the tables.

How do I adjust gear calibration?

The Power Commander V has a utility to accept speed input, and then the unit will be able to calculate what gear you are currently in, based on that speed input. Connect the factory gear sensor to Analog input on the PCV. To calibrate this, put the bike on a stand with the rear wheel able to spin freely, start the motor. In the PCV software go to Power Commander Tools > Calibrate > Gear position. Put the bike in first gear, and let the rear wheel spin while the bike idles. Click the Calibrate button for gear 1. Next, shift the bike into each higher gear, and repeat the process, clicking on the Calibrate button for that gear. If the bike is moving with the clutch out, the Power Commander will now know what gear the bike is in.

How do I calibrate speed input on a PCV?

For the Power Commander to display the correct speed, it has to be calibrated. In the Power Commander software, there is a utility to accomplish this. First a wire has to be run from the vehicle speed sensor to the Power Commander V, speed input. Next, go to the menu Power Commander Tools > Calibrate > Speed Input. On this screen, you can type in a Target Speed, and then get the vehicle up to that target speed (on a stand or dyno). Once the vehicle is at the target speed, just press the Calibrate button. The Power Commander software should now display the correct speed.

How do I load two maps on my PCV?

First you have to enable the option in the Power Commander software. This setting can be found under Power Commander Tools > Configure > Feature Enables & Input Selections. Next check the box for Map Switch, and then click OK. Next, you need to open a second map, and then click Send Map. You should be prompted to choose Position 1 or 2. Click Position 2. Now you should have two map positions. From here on out, when you click Send/Get Map, both maps will be handled.

Tuning Issues

Hard Starting

Most Power Commanders are powered by the injectors on the bike. When you turn the key on, the fuel pump gets power and primes the fuel circuit. When this happens, the injectors get power, and the Power Commander also gets power and lights up. After a few moments, the fuel pump has pressurized the system, and usually shuts off. If the fuel pump shuts off, the injectors’ loose power, and the Power Commander shuts off. If you attempt to start the bike when the Power Commander is off, the bike will NOT start, until the fuel pump comes back on. The fuel pump may come on instantly, after a few engine revolutions, or on some bikes seemingly not at all. If the fuel pump does not come on, the bike will not start. We recommend starting the bike once you turn the key on. Do not wait for the fuel pump to shut off, or a check engine light to go out.

Basic Troubleshooting

When troubleshooting, try removing the PC from the bike first. Does the problem go away? If yes, then load a zero map from us to the Power Commander. Does the bike run the same as it did with no Power Commander? If yes, the map you were using was incorrect for the vehicle. If no, the Power Commander is not working correctly, try a firmware update. Then test again with a zero map. The latest version of firmware is always available on our website.

Predeveloped maps

The predeveloped maps on Dynojets’ website were created on a Dynamometer at our facility in Las Vegas Nevada. All of the maps we have created are listed on the website. These maps were created with the model vehicle listed, with the modifications listed. There is no way for us to have a predeveloped map with every possible aftermarket component. If there is not a map listed for your exact configuration, select a map with similar aftermarket components. If you have an aftermarket slip-on type exhaust, then select a map with a similar slip-on exhaust. If you have an aftermarket full exhaust, select a map for a similar full exhaust. If you have an aftermarket air cleaner, select a map with an aftermarket air cleaner. The map created for one vehicle, should work pretty well for a similar vehicle, with similar aftermarket components installed.

Ignition Timing

The maps created by Dynojet have very few (if any) changes to ignition timing. Dynojet is very conservative in giving out maps to customers everywhere in the world. An ignition timing map that works well for one customer, may not work for another customer, in another area, with different quality fuel.

Harley crank error or no start

If you are getting a hard, or no start problem with a Power Commander installed you may need to have the CKP (crank position sensor) on the bike checked for its output voltage. When they get to the lower limits of their specified range (weak) they can cause errors when the Power Commander is connected. It is a very common occurrence on the older Magnetti Marelli equipped bikes. Sometimes the sensor can pick up metal particles from the crankcase, removing the sensor and cleaning it off may correct the problem. If the sensor tests out at a voltage near or at the lower limits of the specified range, the sensor should probably be replaced as it is an indication that it will soon fail completely.

Power Vision CX

General

DO I NEED TO INSTALL THE POWER VISION CX ON MY VEHICLE?

You do not need to install it to tune your vehicle. It plugs into the vehicle’s ECM diagnostic connector and sends the tune directly to the ECM. Once the tune is flashed to the ECM you can remove it or leave it connected to view real-time data while the vehicle is running. If you want to view real-time data then you can install it using the supplied Velcro or using an accessory mount with AMPS pattern (30mm x 38mm, M4-0.7 thread).

DO I NEED TO USE A COMPUTER?

No. Re-flashing the vehicle’s ECM is accomplished all through the device. You may need to connect the supplied USB cable to a Windows PC to load a custom tune file onto the device or for any firmware updates.

I SEE YOU HAVE A POWER COMMANDER V AND ALSO THE POWER VISION CX FOR MY VEHICLE. WHICH ONE IS BETTER?

The Power Commander is a piggy-back device that must be installed to function. The Power Vision CX is a re-flash device that doesn’t need to be installed. Both will give you more performance and improved drive-ability by adjusting the fuel & ignition, however, the Power Vision CX allows tune changes that can only occur by re-flashing the ECM such as: lowering cooling fan turn on temp, disabling torque limiting functions, and revised drive-by-wire profiles. The Power Commander offers faster real-time tuning through the device whereas the Power Vision CX requires the ECM to be re-flashed after changes are made to the tune.

CAN I USE THE POWER VISION CX ON MULTIPLE VEHICLES?

No. The device will be married to the vehicles ECM.